Photocatalytic photosystem I/PEDOT composite films prepared by vapor-phase polymerization

Photosystem I (PSI) achieves photo-induced charge separation with outstanding internal quantum efficiency and has been used to improve the performance of various photoelectrochemical systems. Herein, we describe a fast and versatile technique to assemble composite films containing PSI and a chosen i...

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Bibliographic Details
Published inNanoscale Vol. 9; no. 18; pp. 6158 - 6166
Main Authors Robinson, M T, Simons, C E, Cliffel, D E, Jennings, G K
Format Journal Article
LanguageEnglish
Published England 14.05.2017
Subjects
Aqueous electrolytes
Capacitance
Contact
Multilayers
Nanostructure
Photocatalysis
Photoelectric effect
Polymerization
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Summary:Photosystem I (PSI) achieves photo-induced charge separation with outstanding internal quantum efficiency and has been used to improve the performance of various photoelectrochemical systems. Herein, we describe a fast and versatile technique to assemble composite films containing PSI and a chosen intrinsically conductive polymer (ICP). A mixture of PSI and a Friedel-Crafts catalyst (FeCl ) is drop cast atop a substrate of choice. Contact with ICP monomer vapor at low temperature stimulates polymer growth throughout PSI films in minutes. We assess the effects of PSI loading on the rapid vapor-phase growth of poly(3,4-ethylenedioxythiophene) (PEDOT) within and above PSI multilayer films, and characterize the resulting film's thickness, electrochemical capacitance, and photocatalytic response. Composite films generate cathodic photocurrent when in contact with an aqueous redox electrolyte, confirming retention of the photocatalytic activity of the polymer-entrapped PSI multilayer assembly.
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ISSN:2040-3364
2040-3372
DOI:10.1039/c7nr01158j